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Preliminary data released by Moderna, which has not yet been peer-reviewed, found that the vaccine was highly effective against the delta variant, but did not indicate an exact efficacy number. MORE: Johnson & Johnson vaccine seems to stand up against delta variant, preliminary research suggestsĪ study the British government conducted in April and May, which analyzed more than 12,000 sequenced COVID-19 cases, found that two doses of Pfizer were 88% effective against symptomatic disease from the delta variant.
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Vivek Cherian, an internal medicine physician with the University of Maryland Medical System. If you're fully vaccinated, meaning you've received both doses of the Pfizer or Moderna vaccine, or the one-dose J&J vaccine and the final dose has fully vested, "you are highly protected from the delta variant and to even higher degree, you're protected from severe disease or hospitalization," said Dr. (A caveat: If wearing a mask makes you feel more comfortable, or if you're immunocompromised, you're under no obligation to takes yours off.)Īccording to the best evidence we have, it's safe for fully vaccinated people to forgo masks indoors this summer. No, unless local officials recommend or require it. Should I wear a mask indoors while at restaurants or shopping?
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With that context in mind, here's how to approach masking this summer, as the delta variant continues to spread.
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Although the county dropped its mask mandate earlier this month, as of this week, the Los Angeles County Department of Public Health "strongly recommends" unvaccinated and vaccinated people wear masks inside public places, like restaurants, stores and movie theaters. Given differences in vaccinations rates at the local level, however, local officials should decide whether to require vaccinated people to wear masks again, Walensky added.Īlready, Los Angeles has reversed its guidance. Rochelle Walensky, director of the Centers for Disease Control and Prevention, speaks to ABC News about the current status of the coronavirus pandemic on 'Good Morning America,' June 18, 2021. "The vaccinated, we believe, still are safe," Walensky told ABC's "Good Morning America." are less effective than Pfizer, Moderna and Johnson & Johnson. By comparison, much of the world is unvaccinated and evidence suggests that certain vaccines developed outside of the U.S. MORE: Why the US isn't following the World Health Organization's mask guidanceĪccording to CDC Director Rochelle Walensky, the United States' strong vaccination rate and its use of highly effective vaccines enables it to do things differently. In the U.S., the CDC stayed the course, with health officials continuing to assert that fully vaccinated Americans do not need to wear masks inside. In response to the worldwide threat posed by the variant, which is believed to be both more transmissible and more virulent than other strains, the World Health Organization shifted guidance, and now recommends that vaccinated individuals wear masks indoors.
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Just a month ago, the variant, which was first identified in India, made up just 3% of new cases in the U.S. and has been detected in all 50 states, according to data from the Centers for Disease Control and Prevention. The delta variant now makes up more than 26% of new COVID-19 cases in the U.S.